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Enable usage of ssl certificates for ElasticSearch connection #2

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Enable usage of ssl certificates for ElasticSearch connection #2

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8f5b208
Add usage of ssl certificates
daskanu May 21, 2019
ff9c185
Add instructions for ssl usage
daskanu May 21, 2019
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4 changes: 4 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -81,6 +81,10 @@ You can use the following config options:
},
"es_host": "localhost", // For getting metadata and field mappings, connect to this ES server
"es_port": 9200, // Port for above
"es_ssl": true, // Enable/Disable SSL
"es_ca_certs": "/etc/ssl/elasticsearch/ca", // Path to ca for ElasticSearch (SSL must be enabled)
"es_client_cert": "/etc/ssl/elasticsearch/cert", // Path to cert for ElasticSearch (SSL must be enabled)
"es_client_key": "/etc/ssl/elasticsearch/key", // Path to key for ElasticSearch (SSL must be enabled)
"writeback_index": "elastalert_status" // Writeback index to examine for /metadata endpoint
}
```
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17 changes: 15 additions & 2 deletions src/common/elasticsearch_client.js
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Expand Up @@ -76,19 +76,32 @@ export function clientSearch(index, type, qs, request, response) {

export function getClient() {
let scheme = 'http';
let ssl_body = {};

if (config.get('es_ssl')) {
scheme = 'https';
ssl_body.rejectUnauthorized = true;

if (config.get('es_ca_certs')) {
ssl_body.ca = fs.readFileSync(config.get('es_ca_certs'));
}
if (config.get('es_client_cert')) {
ssl_body.cert = fs.readFileSync(config.get('es_client_cert'));
}
if (config.get('es_client_key')) {
ssl_body.key = fs.readFileSync(config.get('es_client_key'));
}
}

let auth = '';

if (config.get('es_username') && config.get('es_password')) {
auth = `${config.get('es_username')}:${config.get('es_password')}@`;
}

var client = new elasticsearch.Client({
hosts: [ `${scheme}://${auth}${config.get('es_host')}:${config.get('es_port')}`]
hosts: [ `${scheme}://${auth}${config.get('es_host')}:${config.get('es_port')}`],
ssl: ssl_body
});

return client;
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